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The dgBangerData files are used to define collision properties for PKG objects. These properties define how an object behaves when something collides with it.

The file names are derived from the name of the PKG and the names of the internal parts of it. The syntax is like this for the banger data of the entire object:


and like this for the breakable parts:


For example, the banger data for the wooden barricade, /geometry/sp_barricadewood_f.pkg, of SF and London is defined in the following files:



The format is ASCII-based and made up of tag-value rows grouped in blocks between { and } symbols.

The files start with a definition of the type of banger data given. None of the MM2 files use anything but type a, like this:

type: a

Next comes the main dgBangerData block:

dgBangerData {

<tags> is replaced by a list of tags from the following table. The order of the tags is significant, but some tags may be omitted from the file, in that case the values from default.dgBangerData is used.

Tags of the dgBangerData block
Tag Format Description
AudioId int Index in a list of sound effects the object makes all the time?
Size float float float Width, height and depth of the bounding box around the object
CG float float float Center of gravity, rotation takes place around this point
NumGlows int Number of image light glow effects listed below using the GlowOffset tag. These effects are only active at night
GlowOffset float float float Position of a billboarded glow effect image
Mass float Mass of the object in kilograms, closely related to the objects weight
Elasticity float Controls the bounciness of the object
Friction float friction coefficient, determines how much force is required to slide along the surface of the object
ImpulseLimit2 float Force required to move the object
SpinAxis int Unknown, always set to 0 in MM2 files
Flash int Unknown
NumParts int Number of breakable parts in the object
BirthRule block Particle effect for collision, see below
TexNumber int Number of the particle texture map, see below
BillFlags int Flags controlling billboarding, 0, 64, 128 and 512 are used in MM2 files for unknown effects
YRadius float Bounding cylinder/sphere radius
ColliderId int Index in a list of sound effects the object makes when collided with. The list is defined in the file /aud/cardata/player/default_impacts.csv.
CollisionPrim int Defines the type of object used for collision detection, 0=boundary file, 1=bounding box, 2=cylinder with circular base, height is Y-component of Size and 3=sphere
CollisionType int Unknown, values 4, 16 and 48 are used in MM2 files

The BirthRule block is the same as used in the asBirthRule files used to define particle effects caused by player vehicles.

The image files for particle effects are named fxptn.tex where n is an integer. MM2 has files from index one to index 16, excluding index 15. It is uncertain if more files can be added, but, at least 15 might be re-instated for new particle textures. See asBirthRule for more details.

Billboarding an object or an image means that it is always rotated so that it faces the camera regardless of the actual orientation of the object. The flags may apply restrictions to this, such as only allowing rotation around the Y-axis, etc.